Based on feedback from Uche, I've changed the wording to:
"Usage of an rdf:ID attribute to identify the subject of a
description, is
equivalent to usage of an rdf:about attribute with the the '#'
followed by the URI-encoded form of the content rdf:ID
attribute."
to be more clear. Please send me your comments on this new wording.
--
[ "Aaron Swartz" ; <mailto:me@aaronsw.com> ; <http://www.aaronsw.com/> ]